easy, open the bonnet and look in your engine bay. Theres a long metal rod bent at each end helds on with 2 split pins. Not the shorter ones with plastic ends, its a metal rod.
Take that off, replace with MK3 weighted rod, which is the same item but with a big chunk of metal in the middle! Can do the same thing by strapping a chunk of lead to your existing rod, wont look as nice though
